Twilight flat calculator for Mauna Kea

This facility calculates recommended times for twilight flat field exposures
at Mauna Kea
as calculated by the programme described in "An Exposure Guide for Taking
Twilight Flatfields with Large Format CCDs", Tyson, N. D., and Gal, R. R.,
1993, AJ, 105, 1206. (NB. I haven't tested it yet, this is a raw
adaptation of Tyson & Gal's paper).

For what month:

?

Readout time:

(sec, >10)

Note: "Readout time" is the time between the start of two consecutive
exposures.